122271557 has 2 divisors, whose sum is σ = 122271558. Its totient is φ = 122271556.

The previous prime is 122271551. The next prime is 122271559. The reversal of 122271557 is 755172221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119552356 + 2719201 = 10934^2 + 1649^2 .

It is a cyclic number.

It is not a de Polignac number, because 122271557 - 2¹² = 122267461 is a prime.

Together with 122271559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122271551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61135778 + 61135779.

It is an arithmetic number, because the mean of its divisors is an integer number (61135779).

Almost surely, 2^122271557 is an apocalyptic number.

It is an amenable number.

122271557 is a deficient number, since it is larger than the sum of its proper divisors (1).

122271557 is an equidigital number, since it uses as much as digits as its factorization.

122271557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 32.

The square root of 122271557 is about 11057.6469920142. The cubic root of 122271557 is about 496.3352812974.

The spelling of 122271557 in words is "one hundred twenty-two million, two hundred seventy-one thousand, five hundred fifty-seven".